Finding the Fourth Proportional to 3,870.24, 5,794.92 and 3,086.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.24 : 5,794.92 = 3,086.52 : x
2. Step 2: Convert to fraction form
   3,870.24/5,794.92 = 3,086.52/x
3. Step 3: Cross multiply
   3,870.24x = 5,794.92 × 3,086.52
4. Step 4: Simplify right side
   3,870.24x = 17,886,136.48
5. Step 5: Solve for x
   x = 17,886,136.48/3,870.24
6. Step 6: Final answer
   x = 4,621.45